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Stock Option And Stock Award Plans (Summary of SARs) (Details) - $ / shares | 12 Months Ended |
--- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items] |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Outstanding, Number | 444,718 | 498,687 | 521,601 | 376,440
Share Based Compensation Arrangement By Share Based Payment Award, non-option equity awards, Outstanding, Weighted AverageExercise Price | $ 13.57 | $ 13.49 | $ 13.55 | $ 11.64
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Granted |  |  | 164,464 |
Share-based Compensation Arrangements by Share-based Payment Award, non-option equity awards, Grants in Period, Weighted Average Exercise Price |  |  | $ 16.37 |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Modification | (53,969) | (22,914) | 10,043 |
Share-based Compensation Arrangements by Share-based Payment Award, non-option equity awards, modification, Weighted Average Exercise Price | $ 12.78 | $ 14.83 | $ 13.01 |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period |  |  | (9,260) |
Share-based Compensation Arrangements by Share-based Payment Award, non-option equity awards, forfeited and expired, Weighted Average Exercise Price |  |  | $ 13.87 |
Minimum |  |  |  |
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items] |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award, non-option equity awards, Outstanding, Exercise Price | 10.75 | 10.75 | 10.75 | 10.75
Share Based Compensation Arrangements By Share Based Payment Award, non-option equity award, Grants In Period, Exercise Price |  |  | 16.37 |
Share Based Compensation Arrangements By Share Based Payment Award, non-option equity award, modification, Exercise Price | 10.75 | 10.75 | 10.75 |
Share Based Compensation Arrangements By Share Based Payment Award, non-option equity award, forfeited and expired, Exercise Price |  |  | 10.75 |
Maximum |  |  |  |
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items] |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award, non-option equity awards, Outstanding, Exercise Price | 16.37 | 16.37 | 16.37 | $ 19.64
Share Based Compensation Arrangements By Share Based Payment Award, non-option equity award, Grants In Period, Exercise Price |  |  | 16.37 |
Share Based Compensation Arrangements By Share Based Payment Award, non-option equity award, modification, Exercise Price | $ 16.37 | $ 16.37 | 16.37 |
Share Based Compensation Arrangements By Share Based Payment Award, non-option equity award, forfeited and expired, Exercise Price |  |  | $ 15.25 |

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